根据右边的组件内容左边的菜单栏的相应位置点亮
<el-menu :active="navselected" :default-active="navselected" @select="selectItems"
:default-openeds="navselectedbig">
当中可以用到computed:{
getindex:function(){
return this.$store.store.state.adminleftnavnum
}
}
通过watch监听getindex获取this.$store.store.state.adminleftnavnum的值来绑定navselected;